An iPhone with iOS 7 software displays the new look of the Control Center. Much of the new iOS 7 software is about cosmetic changes.

Written by

Edward C. Baig
USA Today

It's perfectly reasonable to assume that anyone thinking about buying a new iPhone when the latest devices hit retail on Friday would fixate on the hardware itself, especially with Apple trotting out two new models.

Apple is unleashing colorful handsets called the iPhone 5c, priced at $99 to start with a contract. And a brand new $199-on-up flagship phone, the iPhone 5s, brings with it beefy 64-bit computing power, a souped-up camera and the feature most people are pointing to, the Touch ID fingerprint reader.

But the biggest change to come to the iPhone arrives with iOS 7, the operating ...